Filenames with BDMV extension, such as index.bdmv, MovieObject.bdmv, and sound.bdmv are used to describe contents of Blu-ray discs. BDMV files can be commonly found on physical discs and virtual images of such. BDMV is a binary format associated with Blu-ray technology specification.

BDMV file don’t store any actual multimedia data, only information about such data. Physical Blu-ray players automatically read BDMV files, while software players must support this format in order to access such files.